US4680223A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Fibrous inner web for sheet vinyl flooring goods
Assignee: Hercules LLC
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Filing: 1985-11-22
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Granted: 1987-07-14
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Expires: 2005-11-22
Abstract
Abstract A fibrous web is prepared from a composition comprising woodpulp, glass fibers, polyolefin pulp containing carboxylic functionality, an inorganic filler, a polymeric binder, polyolefin pulp devoid of carboxylic functionality, if desired, and polyvinyl chloride, if desired. The fibrous web is useful as an inner layer in a multi-layer sheet floor covering material.
Inventors
- 👤 Peter G. Bither
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-03 07:41
CPC Classifications
D; D21; D21H; D21H13/00; D21H13/10; D21H13/12; D21H13/16; D06; D06N; D06N7/00; D06N7/0005; D06N7/0039; D06N7/0047; D06N7/0049; D21H13/14; D21H13/36; D21H13/38; D21H13/40; Y; Y10; Y10T; Y10T442/00; Y10T442/60; Y10T442/697; Y10T442/699
Claims Analysis
Total Claims: 11
Claim 1
Independent Claim
91 words
A fibrous web-forming composition comprising (a) from about 4% to about 15% woodpulp, (b) from about 5% to about 10% glass fibers, (c) from about 4% to about 15% polyolefin pulp containing carboxylic functionality, (d) from 0 to about 5% polyolefin pulp devoid of carboxylic functionality, (e) from about 30% to about 65% inorganic filler, (f) from about 10% to about 15% thermoplastic polymeric binder, other than polyvinyl chloride, and (g) from 0 to about 20% polyvinyl chloride, all percentages being by weight based on the total weight of the composition.
Claim 2
Dependent Claim
91 words
A fibrous web-forming composition comprising (a) from about 4% to about 15% woodpulp, (b) from about 5% to about 10% glass fibers, (c) from about 4% to about 15% polyolefin pulp containing carboxylic functionality, (d) from 0 to about 5% polyolefin pulp devoid of carboxylic functionality, (e) from about 30% to about 65% inorganic filler, (f) from about 10% to about 15% thermoplastic polymeric binder, other than polyvinyl chloride, and (g) from 0 to about 20% polyvinyl chloride, all percentages being by weight based on the total weight of the composition.
Claim 3
Dependent Claim
28 words
The composition of claim 1 wherein the polyolefin pulp containing carboxylic functionality is a pulp prepared from a blend of high density polyethylene and an ethylene/acrylic acid copolymer.
Claim 4
Dependent Claim
22 words
The composition of claim 1 wherein the polyolefin pulp containing carboxylic functionality is a pulp prepared from polypropylene grafted with maleic anhydride.
Claim 5
Dependent Claim
106 words
A fibrous web, useful as an inner layer in a multi-layer sheet floor covering material, prepared from a composition comprising (a) from about 4% to about 15% woodpulp, (b) from about 5% to about 10% glass fibers, (c) from about 4% to about 15% polyolefin pulp containing carboxylic functionality, (d) from 0 to about 5% polyolefin pulp devoid of carboxylic functionality, (e) from about 30% to about 65% inorganic filler, (f) from about 10% to about 15% thermoplastic polymeric binder, other than polyvinyl chloride, and (g) from 0 to about 20% polyvinyl chloride, all percentages being by weight based on the total weight of the composition.
Claim 6
Dependent Claim
106 words
A fibrous web, useful as an inner layer in a multi-layer sheet floor covering material, prepared from a composition comprising (a) from about 4% to about 15% woodpulp, (b) from about 5% to about 10% glass fibers, (c) from about 4% to about 15% polyolefin pulp containing carboxylic functionality, (d) from 0 to about 5% polyolefin pulp devoid of carboxylic functionality, (e) from about 30% to about 65% inorganic filler, (f) from about 10% to about 15% thermoplastic polymeric binder, other than polyvinyl chloride, and (g) from 0 to about 20% polyvinyl chloride, all percentages being by weight based on the total weight of the composition.
Claim 7
Dependent Claim
29 words
The fibrous web of claim 4 wherein the polyolefin pulp having carboxylic functionality is a pulp prepared from a blend of high density polyethylene and an ethylene/acrylic acid copolymer.
Claim 8
Dependent Claim
32 words
A sheet floor covering material comprising a top layer, a bottom layer, and a plurality of inner layers, at least one of said inner layers comprising the fibrous web of claim 5.
Claim 9
Dependent Claim
23 words
The fibrous web of claim 4 wherein the polyolefin pulp having carboxylic functionality is a pulp prepared from polypropylene grafted with maleic anhydride.
Claim 10
Dependent Claim
32 words
A sheet floor covering material comprising a top layer, a bottom layer, and a plurality of inner layers, at least one of said inner layers comprising the fibrous web of claim 7.
Claim 11
Dependent Claim
32 words
A sheet floor covering material comprising a top layer, a bottom layer, and a plurality of inner layers, at least one of said inner layers comprising the fibrous web of claim 4.
References Cited (Backward Citations)
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Cited
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USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1990-07-13 | 1991-01-12 | 1991-07-14 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1994-07-13 | 1995-01-12 | 1995-07-14 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1998-07-13 | 1999-01-12 | 1999-07-14 | $7700.00 | Window Closed / Lapsed |